void* AudioPlayer::tick_s(void *ptr)
{
struct timespec ts;
AudioPlayer* that = static_cast<AudioPlayer*>(ptr);
while (true)
{
if (that->playing_ == false)
break;
that->tick_p();
if (that->playing_ == false)
break;
/*
struct _timeb timebuffer;
_ftime_s(&timebuffer);
ts.tv_sec = timebuffer.time;
ts.tv_nsec = timebuffer.millitm * 1000;
ts.tv_nsec += 900000000;
*/
#if defined(_WIN32)
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
ptw32_filetime_to_timespec(&ft, &ts);
ts.tv_nsec += 1000000000/30; // 1/30 of sec
#elif defined(__APPLE__)
struct timeval tv;
gettimeofday(&tv, NULL);
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
ts.tv_nsec += 1000000000/30; // 1/30 of sec
#else
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_nsec += 1000000000/30; // 1/30 of sec
#endif
// sem_timedwait(&that->sem_, &ts);
pthread_mutex_lock(&that->mutex2_);
pthread_cond_timedwait(&that->cond_, &that->mutex2_, &ts);
pthread_mutex_unlock(&that->mutex2_);
}
// pthread_exit(NULL);
return NULL;
}
int
sem_timedwait (sem_t * sem, const struct timespec *abstime)
/*
* ------------------------------------------------------
* DOCPUBLIC
* This function waits on a semaphore possibly until
* 'abstime' time.
*
* PARAMETERS
* sem
* pointer to an instance of sem_t
*
* abstime
* pointer to an instance of struct timespec
*
* DESCRIPTION
* This function waits on a semaphore. If the
* semaphore value is greater than zero, it decreases
* its value by one. If the semaphore value is zero, then
* the calling thread (or process) is blocked until it can
* successfully decrease the value or until interrupted by
* a signal.
*
* If 'abstime' is a NULL pointer then this function will
* block until it can successfully decrease the value or
* until interrupted by a signal.
*
* RESULTS
* 0 successfully decreased semaphore,
* -1 failed, error in errno
* ERRNO
* EINVAL 'sem' is not a valid semaphore,
* ENOSYS semaphores are not supported,
* EINTR the function was interrupted by a signal,
* EDEADLK a deadlock condition was detected.
* ETIMEDOUT abstime elapsed before success.
*
* ------------------------------------------------------
*/
{
int result = 0;
#ifdef NEED_FTIME
struct timespec currSysTime;
#else /* NEED_FTIME */
struct _timeb currSysTime;
#endif /* NEED_FTIME */
const DWORD NANOSEC_PER_MILLISEC = 1000000;
const DWORD MILLISEC_PER_SEC = 1000;
DWORD milliseconds;
DWORD tmpAbsMilliseconds;
DWORD tmpCurrMilliseconds;
if (sem == NULL)
{
result = EINVAL;
}
else
{
if (abstime == NULL)
{
milliseconds = INFINITE;
}
else
{
/*
* Calculate timeout as milliseconds from current system time.
*/
/*
* subtract current system time from abstime in a way that checks
* that abstime is never in the past, or is never equivalent to the
* defined INFINITE value (0xFFFFFFFF).
*
* Assume all integers are unsigned, i.e. cannot test if less than 0.
*/
tmpAbsMilliseconds = abstime->tv_sec * MILLISEC_PER_SEC;
tmpAbsMilliseconds += (abstime->tv_nsec + (NANOSEC_PER_MILLISEC/2)) / NANOSEC_PER_MILLISEC;
/* get current system time */
#ifdef NEED_FTIME
{
FILETIME ft;
SYSTEMTIME st;
GetSystemTime(&st);
SystemTimeToFileTime(&st, &ft);
/*
* GetSystemTimeAsFileTime(&ft); would be faster,
* but it does not exist on WinCE
*/
ptw32_filetime_to_timespec(&ft, &currSysTime);
}
tmpCurrMilliseconds = currSysTime.tv_sec * MILLISEC_PER_SEC;
tmpCurrMilliseconds += (currSysTime.tv_nsec + (NANOSEC_PER_MILLISEC/2)) / NANOSEC_PER_MILLISEC;
#else /* ! NEED_FTIME */
_ftime(&currSysTime);
tmpCurrMilliseconds = (DWORD) currSysTime.time * MILLISEC_PER_SEC;
tmpCurrMilliseconds += (DWORD) currSysTime.millitm;
#endif /* NEED_FTIME */
if (tmpAbsMilliseconds > tmpCurrMilliseconds)
{
milliseconds = tmpAbsMilliseconds - tmpCurrMilliseconds;
if (milliseconds == INFINITE)
{
/* Timeouts must be finite */
milliseconds--;
}
}
else
{
/* The abstime given is in the past */
milliseconds = 0;
}
}
#ifdef NEED_SEM
result = (pthreadCancelableTimedWait ((*sem)->event, milliseconds));
#else /* NEED_SEM */
result = (pthreadCancelableTimedWait ((*sem)->sem, milliseconds));
#endif
}
if (result != 0)
{
errno = result;
return -1;
}
#ifdef NEED_SEM
ptw32_decrease_semaphore (sem);
#endif /* NEED_SEM */
return 0;
} /* sem_timedwait */
INLINE
#endif /* PTW32_BUILD_INLINED */
DWORD
ptw32_relmillisecs (const struct timespec * abstime)
{
const int64_t NANOSEC_PER_MILLISEC = 1000000;
const int64_t MILLISEC_PER_SEC = 1000;
DWORD milliseconds;
int64_t tmpAbsMilliseconds;
int64_t tmpCurrMilliseconds;
#if defined(NEED_FTIME)
struct timespec currSysTime;
FILETIME ft;
SYSTEMTIME st;
#else /* ! NEED_FTIME */
#if ( defined(_MSC_VER) && _MSC_VER >= 1300 ) /* MSVC7+ */ || \
( defined(PTW32_CONFIG_MINGW) && __MSVCRT_VERSION__ >= 0x0601 )
struct __timeb64 currSysTime;
#else
struct _timeb currSysTime;
#endif
#endif /* NEED_FTIME */
/*
* Calculate timeout as milliseconds from current system time.
*/
/*
* subtract current system time from abstime in a way that checks
* that abstime is never in the past, or is never equivalent to the
* defined INFINITE value (0xFFFFFFFF).
*
* Assume all integers are unsigned, i.e. cannot test if less than 0.
*/
tmpAbsMilliseconds = (int64_t)abstime->tv_sec * MILLISEC_PER_SEC;
tmpAbsMilliseconds += ((int64_t)abstime->tv_nsec + (NANOSEC_PER_MILLISEC/2)) / NANOSEC_PER_MILLISEC;
/* get current system time */
#if defined(NEED_FTIME)
GetSystemTime(&st);
SystemTimeToFileTime(&st, &ft);
/*
* GetSystemTimeAsFileTime(&ft); would be faster,
* but it does not exist on WinCE
*/
ptw32_filetime_to_timespec(&ft, &currSysTime);
tmpCurrMilliseconds = (int64_t)currSysTime.tv_sec * MILLISEC_PER_SEC;
tmpCurrMilliseconds += ((int64_t)currSysTime.tv_nsec + (NANOSEC_PER_MILLISEC/2))
/ NANOSEC_PER_MILLISEC;
#else /* ! NEED_FTIME */
#if defined(_MSC_VER) && _MSC_VER >= 1400 /* MSVC8+ */
_ftime64_s(&currSysTime);
#elif ( defined(_MSC_VER) && _MSC_VER >= 1300 ) /* MSVC7+ */ || \
( defined(PTW32_CONFIG_MINGW) && __MSVCRT_VERSION__ >= 0x0601 )
_ftime64(&currSysTime);
#else
_ftime(&currSysTime);
#endif
tmpCurrMilliseconds = (int64_t) currSysTime.time * MILLISEC_PER_SEC;
tmpCurrMilliseconds += (int64_t) currSysTime.millitm;
#endif /* NEED_FTIME */
if (tmpAbsMilliseconds > tmpCurrMilliseconds)
{
milliseconds = (DWORD) (tmpAbsMilliseconds - tmpCurrMilliseconds);
if (milliseconds == INFINITE)
{
/* Timeouts must be finite */
milliseconds--;
}
}
else
{
/* The abstime given is in the past */
milliseconds = 0;
}
return milliseconds;
}
